Reenforced-concrete-floor-form carrier-supporting bracket



P. LEE REENFORCED CONCRETE FLOOR FORM CARRIER SUPPORTING BRAQKET FiledNOV. 19, 1923 2 Sheets-Sheet l I1 [aw/25921 P/ufi 2 J56.

l,556,l l 8 Oct. 6 1925- 9. LEE

REENFORCED CONCRETE FLOOR FORM CARRIER SUPPORTING BRACKET Filed Nov. 19,1923 2 Sheets-Sheet 2 f/zzlgv 1:65]

@ct. o, 194a.

UNITED STATES PATENT OFFICE.

PHILIP LEE, OF ST. LOUIS, MISSOURI.

REENFORCED-CONCRETE-FLODIR-FORM CARRIER-SUPPORTING BRACKET.

Application filed November 19, 1923.

I T all whom it may concern:

- distinct and practical improvement to over- :the provision of a comecertain practical objections to, and defects in the universal form ofbrackets or cleats now used for supporting concrete floor form carriers.

An object of my present invention is the provision of a carriersupporting bracket which is adjustable so that it may be quickly loweredfor releasing and lowering form carriers from supporting contact withthe joists supporting form flooring so that the joists and flooring maybe removed without first removing the carrier brackets from theirsupporting posts.

A further object of the invention is the provision of carrier supportingbrackets which can be used over and over again without danger ofbreakage as no nails are employed in positioning same upon asupportingpost.

A still further object of the invention is the provision of a carriersupporting bracket which will obviate the necessity of nailing thecarriers to supporting posts.

A still further object of the invention is carrier supporting bracketcomprising two sections supported by means of a bolt carried by asupporting post, one of which bracket members is movable laterally andvertically with relation to the other bracket member which is held inremovable fixed relation to the supporting A still further object of theinvention is the provision of a carrier supporting bracket which issimple and inexpensive in construction, strong and durable, easily andquickly applied to or removed from a supporting post without theemployment of nails, adjustable for lowering carriers together withjoists and flooring supported thereby, and, which will prove highlyefficient for the purpose intended.

With the above and other objects in view, the invention consists in thenovel features of construction, arrangement and combina- Serial No.675,509.

tion of parts hereinafter more fully de scribed and finally pointed outin the claims hereto appended.

Referring to the accompanying drawings forming a part of thisspecification, wherein like characters of reference denote similar partsthroughout the several views:

Fig. 1, is a view partly in perspective illustrating the application ofmy carrier brackets to supporting posts for supporting carriers uponwhich are supported joists and form flooring as used in reenforcedconcrete floor form construction.

Fig. 2, is a view taken on line 22 of Fig. 1, looking in direction ofthe arrow.

Fig- 3, is a view similar to Fig. 2, but the movable member of thebracket lower for lowering the carrier, joist and flooring after theconcrete flooring has set, prior to removing the form structure toanother location. I

Fig. 4, is a detail in perspective of the stationary member of thebracket.

Fig. 5, is a detail in perspective of the movable member of the bracket.

Referring to the accompanying drawings,

the reference characters 1 and 2 represent two separate reenforcedconcrete floors of a building.

3 represents a plurality of supporting posts of the type usually used inmaking reenforced concrete form structure which are usually supportedupon wedge blocks designated 4, mounted upon the floor. The posts 3 arebraced by means of the suitable tie members 5 and suitable cross-braces6, which are nailed to the supporting posts 3.

7 represents carriers which are supported by means of my improvedcarrier brackets which will be fully described hereinafter, and 8indicates the usual joists which are mounted upon the carriers forsupporting the form flooring '9. The foregoing structure is theuniversal or standard form of reenforced concrete floor form structureand is set out to clearly illustrate the application of my carrierbrackets thereto, thus ob viating the necessity of nailing cleats to theposts 3 for supporting the carriers 7 and of also nailing the carriersto the posts.

In carrying out the aim of my present invention, I employ a carrierbracket consisting of two members or sections A and B.

Section A comprises a metallic body having its inner face flat andprovided with a dowel-pin 1O and a relatively large boss ill 11 having acentral opening 12 which also pass entirely through member A. The boss11 is receivable in a corresponding recess 13 in one of the faces of apost 3 while the dowel-pin is receivable in a corresponding recess 14111the post 3 for properly positioning the bracket member A upon a post 3,as clearly shown in Fig. 2. The bracket member A is held in stationaryor fixed rela- 7 tion to a post 3 byrmeans of asuitable bolt 15 whichpasses through an opening 16 in the post and then through the opening 12of member A. The bolt is provided with a nut 16' which is engageablewith the outer face 17 of the bracket member A for locking said memberagainst displacement. The upper end of'the stationary bracket member Ais slightly beveled to provide a shoulder 18 and is provided with acutaway portion 19 to provide a second or lower shoulder 20 which alsohas its upper face slightly beveled. The lower edge of the outer face 17ofth e stationary member A is provided with a suitable beveled shoulder21, as clear- 1y shown in Fig. 2. It will be here observedthat the boss11 assists the bolt 1.5 incarrying any load strain applied to member A,thus relieving the bolt'from part of the strain.

The movable member or section designated B comprises a metallic bodyhaving. an enlarged central section 22 directed rearwardly to provide acarrier support or snoulder 28. A lip or-wall 2i'is directed upwardly asuitable distance from the forward edge of the shoulder 23 to providcarrierspace C between a post?) and wall, 24- of member B, asclearly'shown in Figs. 2, 3 and 4. The enlarged central section 22 ofmember is cutaway at its lower when as at 25,to provide the upperslightly beveled face 26. The lower face of section 22 of member B isalso slightly'beveled,

as at 27, as clearly shown in Fig. 4-. The

beveled faces 26 and 27 of member B engage thebeveled shoulders 18 and20, respectively, of the stationary member-A when member B is in itsuppermost or normal position, as shown in Figs. 1 and 2, and the beveledface 26' of member B engages the lower shoulder 20 of member Awhenmemeber B is in its lower position, as shown in Fig. 3 for lowering'thecarriers 7, joist 8 and form flooring 9. Movable bracket section B isprovided below the enlarged central section 22 thereof with a verticallydi posed recess 28 in its rear face for the reception of the locking nut16." Section B'is further provided with a vertically disposed slottedopening ,29 for the passage ofthe bolt15, as clearly'shown in Figs. 2and i, and bolt 15 is provided with a head 30 at one endand a securingnut 31 at its opposite end for securely looking the movable bracketsection in contact witlr the stationary bracket section'A,in either itsuppermost or lowermost positions and for holding section B against anypossible displacement under a load strain, as" is evident from Figs. 2and 3 of the drawings. The lower edge of theinner'bracket section B isbeveled, as at 82 to engage the beveled face 21 of the station'arybracketsection A when locked in its uppermost position, as shown in Fig.2 and.

out of engagement therewith when section B is in its lowermost position,as shown in Fig. 3. I

The operation of the carrier bracket is as follows: 7

The carrier bracket is first applied to a post- 3 by means of the boltl5 and nuts 16 and 31, as set forth in' the foregoingdeseription withparticular reference to Figs. 1 and 2 oft-he drawing, which illustratethe'mov able bracket sections B in their uppermost position, hence thecarriers 7, joist 8, and

form flooring 9 in theposition assumed during the construction of" areenforced con crete floor, as is manifest.

After the floor, designated 2, in the-drawing has been made and thecement set, the form structure is removed and set up upon floor 2instead of underneath the same. In

this tearing downoperation .of 'the form. structure, the" operatormerely loosens the theposts 8 and flooring 9. This lowering operation ofthe bracket member B causes a' space to be formed between thefiooringand the concrete floor sufficient to permit the joist 8 to beforced'ove'r as indicated by dotted lines 33 in Fig. 1, thereby causing;theiois'tand form flooring to collapse to be easily removed after thecarriers 7 have been lowered by lowering the bracket sections B withrelation to bracket section A; In the lowering operation of the carriers7, it will be apparent that nota single nail has to be removed from thestructure, as no nails are driven through the carriers '7 into the posts8, nor are there any cleats employed' that must be nailed to the postssetting up the carriers 7 and finally removed when lowering thecarriers7, as in the common practice of building concrete floor formstructures.

From the foregoing description, it is apparent that I. provide a bracketwhich is easily and quickly. applied to a concrete form structure,removed} therefrom and readily manipulated for'lowering the car'-' rierswhen tearing the form 'structuresdown.

The many advantages of the herein described invention will readilysuggest themselves to those skilled in the art to which it appertains.

I do not desire to be understood as limiting myself to the exact detailsof construction and arrangement of parts as herein described andillustrated, as it is manifest that variations and modifications may bemade without departing from the spirit and scope of my invention and theterms of the following claims, hence I Wish it to be understood that Ireserve the right to make any such changes, or modifications as mayfairly fall within the scope of the appended claims when fairlyconstrued.

hat I claim is:

1. A carrier supporting bracket for reenforced concrete floor formstructures comprising a stationary bracket member removably fixed to asupporting post having beveled shoulders at difierent elevations at theupper end of said member and a beveled extension at its lower end and amovable bracket member for supporting form carriers shiftable laterallyand downwardly for lowering carriers supported thereby.

2. A carrier supporting bracket for reenforced concrete floor formstructures comprising a stationary bracket member removably fixed to asupporting post having beveled shoulders at different elevations at theupper end of said member and a'beveled extension at its lower end and amovable bracket member for supporting form carriers shiftable away fromthe stationary member and supported thereby for lowering the elevationof the carrier supporting bracket member. I

A carrier supporting bracket comprising in combination with a supportingpost, a stationary bracket member fixed to said post, a carriersupporting bracket member laterally and vertically adjustable withrelation to the stationary bracket member for changing the elevationthereof to lower carriers supported thereby.

4-. In combination with the supporting post and carriers of a reenforcedconcrete floor form structure, a carrier supporting bracket for eachsupporting post, said brackets consisting of a stationary memberremovably fixed to each supporting post, said member having a pluralityof inclined shoulders and a movable member upon which form carriers aremounted, said memher having inclined faces for engagement with theinclined shoulders of the stationary member and means for permittinglateral and vertical movement of the movable bracket member to a lowerelevation when it is desired to lower the carriers supported thereby.

5. A carrier supporting bracket for reenforced concrete floor formstructures comprising a bracket member removably fixed to a supportingpost of the form structure, a pair of inclined shoulders formed attheupper end of said bracket member, a shiftable bracket member and meansfor supporting said shiftable bracket member at two different elevationsupon the said first mentioned bracket member.

6. In combination with the supporting posts and carriers of a reenforcedconcrete floor foa'n structure, a stationary bracket member having aflat inner face, a boss eX- tending from said face having a centralopening, said boss being seated in a recess in its respective post, adowel-pin extending from said face, said dowel-pin being receivable in arecess in the post, a bolt and a nut carried thereby for securing saidbracket member to its post, a pair of shoulders having beveled faces atthe upper end of said bracket member, said should-er being disposed atdifferent elevations, a shouiaforesaid bolt passes to permit verticaland lateral displacement of said movable memher in changing from oneelevation to the other and a nut carried by the bolt for securelylocking the movable member at the desired elevation with relation to thestationary member.

In testimony whereof, I have hereunto signed my name to thespecification.

PHILIP LEE.

